Menu   Prof. dr. Violeta Leoreanu Fotea


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PAPERS

  1. B. Davvaz, V. Leoreanu-Fotea, Ternary hypergroups (A survey), Int. Jornal of Algebraic Hyperstructures and it's Applications Vol. 1, No. 1, (2014) pp. 29-44
  2. M.B. Safari, B. Davvaz, V. Leoreanu-Fotea, Enumaration of 3- and 4- hypergroups on sets with two elements, European Journal of Combinatorics, In Press, Corrected Proof, Available online 4 september 2014 (Jurnal cotat ISI)
  3. M. Jafarpour, H. Aghabozorgi, V. Leoreanu-Fotea, On Sperner (semi)hypergroups, European Journal of Combinatorics, In Press, Corrected Proof, Available online 2 september 2014 (Jurnal cotat ISI)
  4. R. Ameri, M. Norouzi, V. Leoreanu-Fotea, On prime and primary subhypermodules of (m,n)-hypermodules, European Journal of Combinatorics, In Press, Corrected Proof, Available online 4 september 2014 (Jurnal cotat ISI)
  5. Violeta Leoreanu-Fotea, Ivo Rosenberg, Bijan Davvaz, Thomas Vougiouklis, A new class of n-ary hyperoperations, European Journal of Combinatorics, In Press, Corrected Proof, Available online 26 August 2014 (Jurnal cotat ISI)
  6. M. Jafarpour, V. Leoreanu-Fotea, M. Hassanzadeh, On left (right) \rho-transitive geometric spaces, European Journal of Combinatorics, In Press, Corrected Proof, Available online 29 August 2014 (Jurnal cotat ISI)
  7. Feng Feng, Muhammad Akram, Bijan Davvaz, Violeta Leoreanu-Fotea, Attribute analysis of information systems based on elementary soft implications, accepted by Knowledge-Based Systems, 2014 (Jurnal cotat ISI)
  8. S. Kar, P. Sarkar and V. Leoreanu-Fotea, On Some Interval-valued Fuzzy Hyperideals of Semihypergroups, accepted by Afrika Matematika, 2014
  9. S. Mirvakili, B. Davvaz, V. Leoreanu-Fotea, A note on ‘‘New fundamental relation of hyperrings’’, European Journal of Combinatorics, 41 (2014) 258–261 (Jurnal cotat ISI)
  10. B. Ersoy, B. Davvaz, S. Onar, V. Leoreanu-Fotea, Fuzzy -Hyperideals in -Hypersemirings by Using Triangular Norms, The Scientific World Journal, vol. 2014, Article ID 428635, 8 pages, 2014. doi:10.1155/2014/428635.
  11. V. Leoreanu-Fotea, B. Davvaz, Feng Feng, Fuzzy Γ-hypergroups. Journal of Intelligent and Fuzzy Systems 26 (4): 1593-1600 (2014) (Jurnal cotat ISI)
  12. Madad Khan,  Leoreanu-Fotea, V. and Syeda Kokab, Fuzzy Right Ideals Of Intra- Regular Abel Grassmann.S Groupoids, Analele Univ. Ovidius Constanta, Vol.22 (3), 2014, 95-113
  13. B. Davvaz, V. Leoreanu-Fotea, Triunghiular fuzzy subGamma-semihypergroups in Gamma-semihypergroups, Kuwait J. Sci 41 (1), pp 93-106, 2014 (Jurnal cotat ISI)
  14. Faisal Yousafzai, V. Leoreanu-Fotea, Murad ul Islam Khan, On the structure of ordered AG-groupoids, accepted by Asian-European Journal of Mathematics, 2014
  15. M. Jafarpour, V. Leoreanu-Fotea, A. Zolfaghari, Weak complete parts in semihypergroups, Iranian J. of Mathematical Sci. and Informatics, vol. 8, n. 2, 2013, p. 101-109
  16. Violeta Leoreanu-Fotea, Bijan Davvaz, Feng Feng, Codrina Chiper, Join spaces, soft join spaces and lattices, Analele Stiintifice Ale Universitatii Ovidius Constanta-Seria Matematica, vol. 1, 2014 (jurnal cotat ISI)
  17. Kostaq Hila, Krisanthi Naka, Violeta Leoreanu-Fotea, Sabri Sadiku, Algebraic hyperstructures of soft sets associated with ternary semihypergroups, Italian Journal of Pure and applied Mathematics, n. 30, 2013, p.349-372
  18. Violeta Leoreanu-Fotea, Bijan Davvaz, Feng Feng, Fuzzy Gamma-hypergroups, accepted by Journal of Intelligent & Fuzzy Systems, DOI 10.3233/IFS-130840, 2013 (Jurnal cotat ISI)
  19. S.SH. Mousavi, V. Leoreanu-Fotea and M. Jafarpour, Cyclic groups obtained as quotient hypergroups, accepted by Annals of the Alexandru Ioan Cuza University - Mathematics, 2013 (Jurnal cotat ISI)
  20. Xueling Ma, J. Zhan, V. Leoreanu-Fotea, On (fuzzy) isomorphism theorems of soft Gamma-hypermodules, U.P.B. Sci. Bull., Series A, Vol.75, Iss.1, 2013, 65-76 (Jurnal cotat ISI)
  21. V. Leoreanu-Fotea, J. Zhan, L. Leoreanu, Fuzzy Gamma-hyperrings and Fuzzy Gamma-hypermodules, Journal of Intelligent & Fuzzy Systems vol. 24, n. 3 (2013),647-655 (Jurnal cotat ISI)
  22. Y.Yin, J. Zhan, V. Leoreanu-Fotea and S. Rasouli, General Forms of (α, β)-Fuzzy Subhypergroups of Hypergroups, J. of Mult.-Valued Logic & Soft Computing, vol.21, number 1-2, p. 1-24, 2013 (Jurnal cotat ISI)
  23. Violeta Leoreanu-Fotea, Feng Feng and Jianming Zhan, Fuzzy soft hypergroups, International Journal of Computer Mathematics, Vol. 89, No. 8, May 2012, 963–974 (Jurnal cotat ISI)
  24. B. Davvaz, E. Hassani Sadrabadi and V. Leoreanu-Fotea, Atanassov's intuitionistic fuzzy grade of a sequence of fuzzy sets and join spaces determined by a hypergraphs , Journal of Intelligent and Fuzzy Systems, 2012, Journal of Intelligent and Fuzzy Systems 23 (1), pp. 9-25.(Jurnal cotat ISI);
  25. S.Sh. Mousavi,V. Leoreanu-Fotea, M. Jafarpour, H. Babaei, Equivalence relations in semihypergroups and the corresponding quotient structures, European Journal of Combinatorics 33 (2012) 463–473 (Jurnal cotat ISI)
  26. Yuming Feng, Youyi Jiang and V. Leoreanu-Fotea, On the grade of a sequence of fuzzy sets and join spaces determined by a hypergraph II, accepted by Afrika Mathematika, 2011, DOI 10.1007/s13370-011-0038-6
  27. Jianming Zhan, V. Leoreanu-Fotea, Thomas Vougiouklis, Fuzzy soft Gamma-hypermodules, Scientific Bulletin-University Politehnica of Bucharest, Series A, Vol. 73, Iss. 3, (2011) 13-28 (Jurnal cotat ISI)
  28. M. Jafarpour, S.Sh. Mousavi, V. Leoreanu-Fotea, A class of semihypergroups connected to preordered weak Gamma-semigroups, Computers and Mathematics with Applications 62 (2011) 2944–2949 (Jurnal cotat ISI)
  29. V. Leoreanu-Fotea, Approximations in hypergroups and fuzzy hypergroups, Computers & Mathematics with Applications, 61 (2011) Pages 2734-2741 (Jurnal cotat ISI)
  30. V. Leoreanu-Fotea, M. Jafarpour, S.Sh. Mousavi, The relation delta^n and multisemi-direct hyperproducts of hypergroups, accepted by Communications in Algebra, 2011 (Jurnal cotat ISI);
  31. B. Davvaz, V. Leoreanu Fotea, Binary relations on ternary semihypergroups, Communications in Algebra, 38: 3621-3636, 2010 (Jurnal cotat ISI);
  32. B. Davvaz, L. Zareyan and V. Leoreanu-Fotea, (3,3)-Ary Differential Rings, Mediterranean Journal of Mathematics, 9 (2012), 357–378, DOI 10.1007/s00009-011-0124-x (Jurnal cotat ISI);
  33. Feng Feng, Xiaoyan Liu, Violeta Leoreanu-Fotea, Young Bae Jun, Soft sets and soft rough sets, Information Sciences, Vol. 181 Issue: 6 (2011) Pages: 1125-1137 (Jurnal cotat ISI);
  34. B. Davvaz and V. Leoreanu-Fotea, Structures of fuzzy Gamma-hyperideals of Gamma-semihypergroups, Journal of Multiple-Valued Logic and Soft Computing, Vol. 19 (2012), pp. 519–535 (Jurnal cotat ISI);
  35. Xueling Ma, Jianming Zhan, V. Leoreanu-Fotea, On (fuzzy) isomorphism theorems of Gamma-hyperrings, Computers & Mathematics with Applications, Volume 60, Issue 9, November 2010, Pages 2594-2600 (Jurnal cotat ISI)
  36. V. Leoreanu-Fotea, Fuzzy join n-ary spaces and fuzzy canonical n-ary hypergroups, Fuzzy Sets and Systems, Volume 161, Issue 24, 16 December 2010, Pages 3166-3173 (Jurnal cotat ISI)
  37. S. H. Mousavi, V. Leoreanu-Fotea, M. Jafarpour, R-parts in (semi)hypergroups, Annali di Matematicva Pura e Applicata, Volume 190, Number 4, (2011) 667-680, DOI: 10.1007/s10231-010-0168-8 (Jurnal cotat ISI)
  38. Feng Feng, Yongming Li, Violeta Leoreanu-Fotea, Application of level soft sets in decision making based on interval-valued fuzzy soft sets, Computers & Mathematics with Applications, Volume 60, Issue 6, September 2010, Pages 1756-1767 (Jurnal cotat ISI)
  39. V. Leoreanu Fotea, P. Corsini, Soft hypergroups, Critical Review. A publication of Society for Mathematics of Uncertainty, Creighton University - USA, July 2010, vol. IV, 81-97;
  40. V. Leoreanu Fotea, I.G. Rosenberg, Hypergroupoids determined by lattices, European Journal of Combinatorics, 31 (2010), Pages 925-931 (Jurnal cotat ISI);
  41. B. Davvaz, V. Leoreanu-Fotea, Intuitionistic fuzzy n-ary hypergroups, Journal of Multiple Valued Logic Soft Computing, Volume: 16, Issue: 1-2 (2010) Pages: 87-103, ISSN: 1542-3980 (Jurnal cotat ISI);
  42. V. Leoreanu-Fotea, A new type of fuzzy n-ary hyperstructures, Information Sciences, Volume 179, Issue 15, 4 July 2009, Pages 2710-2718 (Jurnal cotat ISI);
  43. B. Davvaz, V.Leoreanu-Fotea, Applications of Interval Valued Fuzzy n-ary Polygroups with Respect to t-Norms (t-Conorms), Computers & Mathematics with Applications, Volume 57, Issue 8, April 2009, Pages 1413-1424 (Jurnal cotat ISI);
  44. V. Leoreanu-Fotea, Fuzzy hypermodules, Computers and Mathematics with Applications, Volume 57, Issue 3,(2009), 466-475, ISSN: 0898-1221 (Jurnal cotat ISI);
  45. V. Leoreanu-Fotea, B. Davvaz, Fuzzy hyperrings, Fuzzy sets and Systems, Volume 160, Issue 16, (2009), Pages 2366-2378 (Jurnal cotat ISI);
  46. B. Davvaz, P.Corsini, V. Leoreanu-Fotea, Atanassov's intuitionistic (S,T)-fuzzy n-ary subhypergroups and their properties, Information Sciences, Volume 179, Issue 5, (2009) 654-666 (Jurnal cotat ISI);
  47. Mohsen Asghari-Larimi, Violeta Leoreanu-Fotea, A connection between hypergroupoids and L-Fuzzy Sets of Type 2, Italian Journal of Pure and Applied Mathematics, n. 26 (2009) 207-216;
  48. Violeta Leoreanu-Fotea, Ivo G. Rosenberg, Join spaces determined by lattices, Journal of Multiple Valued Logic Soft Computing, Volume: 16, Issue: 1-2 (2010) Pages: 7-16, ISSN: 1542-3980 (Jurnal cotat ISI);
  49. V. Leoreanu-Fotea, Fuzzy rough n-ary subhypergroups, Iranian Journal of Fuzzy Systems, vol. 5, n. 3 (2008), 45-56, ISSN: 1735-0654 (Jurnal cotat ISI);
  50. B. Davvaz, P.Corsini, V. Leoreanu-Fotea, Fuzzy n-ary subpolygroups, Computers and Mathematics with Applications, 57 (2009), 141-152, ISSN: 0898-1221 (Jurnal cotat ISI);
  51. V. Leoreanu-Fotea, Canonical n-ary hypergroups, Italian Journal of Pure and Applied Mathematics, n.24, (2008), 247-254, ISSN : 1126-8042;
  52. B. Davvaz, V.Leoreanu- Fotea, On a product of fuzzy Hv-submodules, International Journal of Fuzzy Systems, Vol. 10, No. 2, 119-122, June ( 2008) , ISSN: 1562-2479 (Jurnal cotat ISI);
  53. V. Leoreanu- Fotea, P. Corsini, Isomorphisms of hypergroups and of n-hypergroups with applications, Soft Computing, vol. 13, n. 10 (2009), 985-994, ISSN: 1432-7643 (Jurnal cotat ISI);
  54. V. Leoreanu-Fotea, I.G. Rosenberg, Homomorphisms of hypergroupoids associated with L-fuzzy sets, Journal of Multiple Valued Logic Soft Comput, vol. 15, issue 5-6, pages 537-545, (2009), ISSN: 1542-3980 (Jurnal cotat ISI);
  55. V. Leoreanu-Fotea, The lower and upper approximations in a hypergroup, Information Sciences 178 (2008), pp. 3605-3615, ISSN: 0020-0255 (Jurnal cotat ISI);
  56. V. Leoreanu-Fotea, B. Davvaz, Roughness in n-ary hypergroups, Information Sciences, 178 (2008), 4114-4124 , ISSN: 0020-0255 (Jurnal cotat ISI);
  57. V. Leoreanu-Fotea, The direct and the inverse limit of hyperstructures associated with fuzzy sets of type 2, Iranian Journal of Fuzzy Systems, vol. 5, n. 3 (2008), 89-94, ISSN: 1735-0654 (Jurnal cotat ISI);
  58. P. Corsini, V. Leoreanu-Fotea, A. Iranmanesh, On the sequence of hypergroups and membership functions determined by a hypergraph, Journal of Multiple Valued Logic and Soft Computing, v.14, issue 6, 565-577 (2008), ISSN: 1542-3980 (Jurnal cotat ISI);
  59. V. Leoreanu- Fotea, Several types of n-ary subhypergroups, Italian Journal of Pure and Applied Mathematics, n.23, (2008), 261-274, ISSN : 1126-8042;
  60. V. Leoreanu- Fotea, B. Davvaz, Join n-spaces and lattices, Journal of Multiple Valued Logic and Soft Computing, vol.15, issue 5-6, 421-432, (2009), ISSN: 1542-3980 (Jurnal cotat ISI);
  61. V. Leoreanu- Fotea, B. Davvaz, n-hypergroups and binary relations, European Journal of Combinatorics, 29, (2008) 1207-1218, ISSN: 0195-6698 (Jurnal cotat ISI);
  62. P. Corsini, V. Leoreanu- Fotea, On the grade of a sequence of fuzzy sets and join spaces, determined by a hypergraph, Southeast Asian Bulletin of Mathematics, (2010) 34: 213-242, ISSN: 0129-2021;
  63. V. Leoreanu- Fotea, L. Leoreanu, About a sequence of hyperstructures associated with a rough set, Southeast Asian Bulletin of Mathematics, (2010) 34: 113-119, ISSN: 0129-2021;
  64. V. Leoreanu- Fotea, C. Ciurea, On a P-hypergroup, Journal of Basic Science 4, n. 1, (2008), 75-79;
  65. V. Leoreanu, About hyperstructures associated with fuzzy sets of type 2, Italian Journal of Pure and Applied Mathematics, n 17, (2005), 127-136;
  66. V. Leoreanu, Weak mutually associative hyperstructures, Part II, Proceedings of A.H.A. Conference, Samothraki, Greece,( 2002), 183-189;
  67. V. Leoreanu, Weak mutually associative hyperstructures, Part I, PU.M.A., vol.13 (2002), n.3, 373-381, ISSN 0866-5907 ;
  68. P. Corsini, V. Leoreanu, Fuzzy sets and join spaces associated with rough sets, Circolo Matematico di Palermo, S.II, T.LI, (2002), 527-536, ISSN: 0009-725X ;
  69. V. Leoreanu, Gh. Radu, Direct limits and inverse limits of hypergroups associated with lattices, Italian J. of Pure and Appl. Math., n.11, (2002), 121-130, ISSN : 1126-8042;
  70. V. Leoreanu, Direct limits and products of join spaces associated with rough sets, Part II, Int. J. Sci. & Technol. Univ. Kashan, Vol. I, no.1, (2000), 33-40;
  71. V. Leoreanu, Direct limit and inverse limit of join spaces associated with fuzzy sets, PU.M.A. vol.11, n. 3(2000), 509-516, ISSN 0866-5907;
  72. V. Leoreanu, Direct limits and Inverse Limits of SHR Semigroups, Southeast Asian Bulletin of. Math, n.25, (2001), 421-426, ISSN: 0129-2021;
  73. G. Calugareanu, V. Leoreanu, Hypergroups associated with lattices, Italian Journal of Pure and Appl. Math., n.9, 2001, 165-173, ISSN : 1126-8042;
  74. V. Leoreanu, The heart of some important classes of hypergroups, PU.M.A., vol.9, no 3-4, 1998, 351-360, ISSN 0866-5907;
  75. P. Corsini, V. Leoreanu, Hypergroups and binary relations, Algebra Universalis, 43, 2000, 321-330, ISSN :0002-5240 (Jurnal cotat ISI);
  76. V. Leoreanu, The class of hypergroups in which the heart is the set of identities, Le Matematiche -Catania, vol.LIV, (1999), Fasc 1, 49-54;
  77. V. Leoreanu, Direct limits and products of join spaces associated with rough sets, Honorary Volume dedicated to Prof. Emeritus J. Mittas, Aristotle Univ. of Thessaloniki, (1999), Greece, 307-312;
  78. V. Leoreanu, Commutative hypergroups associated with arbitrary hypergroups, Proceedings of the Seventh Congress of AHA, Taormina, (1999), Journal of Discrete Mathematical Sciences & Cryptography, vol.6 (2003) no.2-3, 195-198;
  79. V. Leoreanu, About the simplifiable cyclic semihypergroups, Proceedings of the Congress in Algebra, Iasi, 1998, Italian Journal of Pure and Aplied Mathematics, n.7, (2000), 69-76;
  80. V.Leoreanu, L. Leoreanu, Hypergroups associated with hypergraphs, Italian Journal of Pure and Applied Mathematics, n.4, (1998), 119-126, ISSN : 1126-8042
  81. V. Leoreanu, P.Corsini, Le theoreme de Lagrange dans les hypergroupes, Buletinul Stiintific Timisoara, Seria Mat-Fiz, Tom 41 (55), n.2, (1996), 1-22;
  82. V. Leoreanu, On the heart of join spaces and of regular hypergroups, Riv. Mat Pura e Appl., n. 17, (1995), 133-142;
  83. V. Leoreanu, Une note sur le demihypergroupes qui sont quasi-hypergroupes d'un cote', Proceedings of the Sixth Int. Congress AHA, 96, Praga, Democritus University of Thrace Press, Greece, (1996), 85-88;
  84. V. Leoreanu, Generalisation de notions et resultats de la theorie des groupes dans les hypergroupes, Proceedings of IRB International Workshops - New Frontiers in Multivalued Hyperstructures, (1995), 149-158;
  85. P. Corsini, V. Leoreanu, About the heart of a hypergroup, Acta Universitatis Carolinae, Mathematica et Physica (Prague), vol.37, no.1, (1996), 17-29;
  86. V. Leoreanu, New results on the hypergroups homomorphisms, Journal Inf. and Optimization Sciences, vol.20, no.2, (1999), 287-298;
  87. V. Leoreanu, New results on subhypergroups theory and on the nucleus structure, PUMA, v.5, n.3, (1994), 317-329, ISSN 0866-5907;
  88. P. Corsini, V. Leoreanu, Join spaces associated with fuzzy sets, Journal of Comb., Inf and System Sciences, vol. 20, nos 1-4, (1995), 293-303;
  89. V. Leoreanu, Sur la limite directe d'hypergroupes, Annales Scientifiques Univ. Constanta, n.2, (1994), 99-105;
  90. V. Leoreanu, Une note sur les groupes permutables, Ratio Matematica, n.12, (1997), 73-78;
  91. V. Leoreanu, Centralisateur d'un element dans un hypergroupe, Circ. Mat. Palermo, Seria II, Tom XLIII, (1994), 413-418, ISSN: 0009-725X
  92. V. Leoreanu, On the width of a hypergroup, Fifth Int. Congress on AHA 93, Hadronic Press, USA, Congress Proceedings, (1994), 143-146.

SURVEYS:

  1. V. Leoreanu-Fotea, n-ary hyperstructures and some connections with binary relations and lattices, 10th International Congress on Algebraic Hyperstructures and Applications, Proceedings, 33-41 (2009), Brno, CZECH REPUBLIC
  2. V. Leoreanu-Fotea, Survey on connections between lattices and algebraic hyperstructures, Revista de Logica, n, 3, 2010, publicatie online, ISSN 2065-1449
  3. P. Corsini, V. Leoreanu, Survey on new topics of Hyperstructure Theory and its applications, Proceedings of the Eighth International Congress , Samothraki, Greece, September 1-9, 2002, Spanidis Press, 1-39, 2003;
  4. V. Leoreanu, Hyperstructures and Rough Sets, Sci. Annals of USAMV Iasi, Tom XLVII, v.2-2004, Sect. Horticulture, Proc. of the annual Symposium on “Mathematics applied in Biology & Biophysics”, 183-186,U.A.S.V.M. Iasi, 2005; ISSN 1454-7376;
  5. P. Corsini, V. Leoreanu, New directions of research in the correspondence between fuzzy sets and algebraic hyperstructures, Sci. Annals of USAMV Iasi, Tom XLVI, v.2-2003, Sect. Horticulture, Proc. of the annual Symposium on “Mathematics applied in Biology & Biophysics”, 9-14, ,U.A.S.V.M. Iasi, 2003; ISSN 1454-7376
  6. V. Leoreanu, Regard sur les derniers resultants dans la theorie des sous-hypergroupes, The 6th Symposium of mathematics and its Applications, Technical University of Timisoara, 238-240, Ed. Mirton, Timisoara, 1995.
  7. V. Leoreanu, L. Leoreanu, Hyperstructures and Binary relations, Sci. Annals of USAMV Iasi, Tom XLV, 2002, Faculty of Horticulture, Proc. of the annual Symposium on “Mathematics applied in Biology & Biophysics”, 69-72, ,U.A.S.V.M. Iasi, 2002, ISSN 1454-7376.

BOOKS

  1. V. Leoreanu, Fundamente de Algebră - Teorie şi Exerciţii, (Romanian), Ed. Matrix, 2001, ISBN 973-685-336-5, 273 pag
  2. V. Tamas, V. Leoreanu, Curs de Aritmetică, (Romanian), Ed. Matrix, 2002, ISBN 973- 685- 440- X, 166 pag
  3. P. Corsini, V. Leoreanu, Applications of Hyperstructure Theory, Kluwer Academic Publishers, Advances in Mathematics, vol.5, 2003, ISBN 1-4020-1222-5, 336 pag
  4. V. Leoreanu, Gh. Radu, Prolegomena of Categories and Homological Algebra, Matrix Rom, 2007, ISBN 978-973-755-235-8, 429 pag
  5. B. Davvaz, V. Leoreanu Fotea, Hyperring Theory and Applications, Hadronic Press, 2008, ISBN 1-57485-064-4, 336 pag

The book Prolegomena of hypergroup Theory, by P. Corsini was translated in Romanian by V. Leoreanu, Ed. Univ. "Al.I.Cuza", 1998, ISBN 973-9312-26-8 , 219 pag

AWARDS